Pipe cutter



J. CONNING Sept, 30 1924.

PIPE CUTTER Filed Jan. 14 1924 Patented ept. 30, 1924,

JAMES GONNING, O15 CHICAGO, ILLINOIS.

PIPE CUTTER.

Application filed January 14, 1924.

Chicago, in" the county of Goolt and Stateof I1linois,.have inventedcertain new and useful Improvements in Pipe Cutters, of which thefollowing is 1 a specification.

This; invention relates to improvements in a typeofrpipecutters in whicha linked or flexibleelement to surround the pipe and carrying spacedcircular and rotatable outters' or disks to out the same. is employed inconnection with means for supporting said' element and for adjusting itto-pi-pes o'tdittferent diameters, as well as, to cause itto grip thepipe, to the end,rthat the said outterswill becausedto make acircumferea tial incision therein when moved around or backand forthcrosswise of the pipe, and it consists-in certain peculiarities of theconstructi-on, novel arrangement and combination otthejvarious partsthereofas will be hereinafter more fully set fortlr and specifically;claimed.

The principal object oi the invent-ion, is, the provision of a pipecutter of the above mentioned general character... which shall be 0t anextremely simple and inexpensive construction, strong, durable andeilicient in operation, with its parts so-made, arranged andco-operatingwith one another. that the device can: be readily and operativelvapplied to a pipe whether the same is fixedly mounted at its ends orhasone or both of its ends tree.

Another object of the invention is to provide a pipe cutter of suchconstruction and arrangement oi? its parts as to enable pipes ofirregular circumferences, or those that are not at true cylindricalshape to be readi 1y cut thereby.-. r

Still another object is the provision of' a pipe cutter which shallnormally have a range of adjust-ability oii' its parts to adapt it foruse on pipes varying in size from the smallest to the largest sizecommonly used, yet. when required for use on pipes of extraordinarysize, can have its flexible ele ment, or cutter carrier, readilylengthened to? a desired extent for circumscribing the pipe to be: out.

The invention contemplates. as another ob-- iect thereof, the provisionof a pipe cutter having parts thereof detachably connected together,tothe end, that they can be readily struction.

Serial No. 686,015.

assembled and when desired, disconnected to permit them toheencased in atool-box or other comparatively small container, besides perm-ittingworn or damaged parts to be replaced bynew or perfectones;

Still another object is to provide a pipecutter of such construction,size and arrangement of its parts that it can be readily; andeffectually operated by a single person.

@ther objects and advantages of the in vention will be disclosed in thefollowing description and explanation.

In the accompanying drawing, which serves to illustrate an embodiment ofthe invention,-

Fig. 1- is a side view: partly in elevation and partly in section of apipe cutter con structedaccording; to my improvements, showing itmounted on a portion of: a pipewith its-parts arranged for cutting; thesam c.

Fig-. 2 is a face viewpartly in section and partly in elevation taken online 2 2 of Fig. 1, showing by continuous lines the partsarranged asshown in Fig. 1; and by? dotted lines about the position the parts willoccupy when arranged for operation on a pipe of considerably largerdiameterand also illus trating the manner o'li entendingthelength of thelinked member or cutter carrier oi the device, and

Fig. 3 is a detached perspective viewof one ot thelinks forming thecitttercarrier.

Like numerals oi reterencerefer to corre v spending parts through-outthe different views ofthe drawing. I

The reference numeral 5 designates the supporting and guidingbody forcertain members of the device. which bodyis provided with alongitudinallyextended cavity 6 which is preferably rectangular incrosssection and extends from near one end of the body to and throughits other end as will be readily understood by reference to Figs. 1 and2 of the drawing; The outer end of the body 5 is contracted and providedwith a serew threaded opening 7 for engagement with; a screw threadedadjusting rod 8 the threads of the openings 7 and those oi the rod 8being; ct left-handed con The upper end of they body- 5 or that endthereoiiopposi te its contracted endis laterally enlarged as at 9 andthe cavitv6 is correspondins lv flared or enlarged at its upper portion.Transversely' iournaled' inthe enlarged portion 9:01; the bodyand at;

each side thereof is a roller 10 employed for the purpose to b presentlyexplained. Slidably mounted inthe guide-way or rectangular cavity 6 ofthe body 5 is a follower block 11 shaped in cross-section to correspondwith its guide-way. This block is provided at its upper end with alongitudinally disposed extension 12 having a transverse opening thereinfor the reception of a pin or pi ot'l8 upon which are pivotally mountedat one of their ends on each side of the extension 12 a pair of clampingand releasing links 14 and 15. the links 14 being held in spacedrelation to each other by means of the extension 12 on which they aremounted as will be understood by reference to Fig. 1 of the drawing.These links are extended between the rollers 10 on the body 5 outwardly.The follower or block 11 has transversely disposed therein a.cross-shaped opening 16 which extends through one of the walls of theblock 11 and also through its lower end or that end thereof opposite theextension 12 for the reception and retention of the inner end of theadjusting rod 8 and an enlargement 17 carried by said rod near its innerend. By'this arrangement it is manifest that the rod 8 with itsenlargement 17 can be readily placed within the opening 16 andpositioned therein about as shown in Fig. 1, and'that a swiyeledconnection between the rod and block will therebybe provided. The outerend of the rod 8 is provided with a head 18 which may be detachablymounted thereon. Extended through a suitable opening in the head 18 is aslidab-le handle 19 employed for turning the rod 8 in the properdirection to advance orre tract the follower or block 11 which in turnwill advanc or retract the above mentioned links."

chain. or linked element designated as a whole by the numeral 20 isemployed to carry a series of disk-shaped cutters 21 which are mountedon the links of the chain or linked element in a manner to be presentlyexplained. The chain or linked element comprises a plurality of Hshaipedlinks designated as a whole by the numeral Each of'these links comprisesa pair of parallel members 23 and 24 seeFig. 3. which are connectedabout midway between their ends by means of a cross-piece 25 which maybe and preferably is integral with said members. The members 23 and 2 1of each link are provided with registering openings 26 and 27. thelatter preferably being screw threaded for engagement with thescrewthreaded ends of screw bolts 28, one of which is located in thepair of said openings at each-end of the members '23 and 24: of eachlink. These screw bolts are employed not only' for pivotally connectingthe links 22 together, but also for the purpose of providingaxles orshafts for the disks or cutters 2 1, each of which disks is providedcentrally thereof and on each of it sides with an oriliced hub or boss29'through which the bolts 28 are extended. As the links 22 ovcrlapeachother as shown in Fig. l, the screw-threads in the member 27 of eachalternate link may be omitted but otherwise the links composing thechain or linked element are of the same construction as shown in 3 andabove described. The chain or linked element 20 is pivotally connectedat one of its ends bymeans of one of the screw bolts 28 extended throughthe. openings in one end of the link at said end of the chain to a pairof the links M and 15 on one side of an axial line through the extension12 of th block or follower 11 which actuatessaid links. and the oppositeend of the chain or linked element 20 is detachably connected to thepair of links 14 and 15 located on the opposite side of the axial lineof said eXtension 12 by means of one of the screw bolts 29 located inthe free end of the link form} ing the free end of the chain or flexibleele-' ment. 1 1 For detachably connecting the last named link to thelast named links 14 and 15, the last named pair of links 14 and 15isfe'ach] provided ncarits outer end with an 'arcuate slot 30 into whichthe bolt 28 just above mentioned can be placed so as to have itsseat atthe inner ends of said slots. By this arrang'ement it is manifest thatthe said bolt can be removed from the islots 30 so that the chain can beplaced around the pipe 31 no matter whether it is fixedly sup ported atits ends or not, when by replacing the bolt 28 in the slots 30 andbyturning the adjusting rod 8 in the proper direction, itis" manifestthat the block or followerll will be drawn towards the free end of thebody 5. thus causing the links or arms 15 and 14 to co-act with therollers'lO in such a way that the. outer ends of said links will beforced towards each other thereby tightenl ing the chain on the pipe andat the same time positioning the disks 21 in such a way that they willcontact with the outer surface of the pipe whenby moving the body 5 androd 8 crosswise of the pipe. it is obvious the said disks or cutterswill form incisions in the pipe to a sufficient depth to permit it to bebroken by a slight 'blowp provided the pipe is made of cast material;and if not, by continuing the'back and forth movement of the body andhandle,-it is apparent that the incisions may be cut entirely throughthe pipe.

If it is desired to lengthen the chain 20.

it is manifest that after detaching the link at the free end of thechain from the clamp-' ing links 14 and 15 having the slots therein,another link shown in detached positionand' dotted lines in Fig. 2 maybe connected at one of its ends to the link at the free end of the chainby means of the screw bolt '28 formerly positioned in said slots and byinserting another screw bolt through the openings in the free end of thedetached link for engagement with the slots of the clamping links.

In order to assemble the parts of the de vice, it will be understoodthat, assuming that the follower block 11 and the rod 8 is detached fromthe body 5, and that the link 14 and 15 as well as the chain 20 areconnected together as shown in the drawing, the end of the rod 8 havingthe enlargement l7 thereon, can be placed in the cross-shaped opening 16of the block 11, when the opposite end of the rod 8 from which the head18 has been removed, can be inserted in the enlarged end of the body 5and then through the opening 7 in said body, thus enabling the block 11to enter the guide-way 6 therefor. lVhen in this position, the clampinglinks of the device will be interposed be tween the rollers 10 carriedby the body 5 and it is apparent that by turning the rod 8 in the properdirection the block 11, as well as the clamping links, can be advancedor retracted with respect to the body 5, which should be firmly held insubstantially a stationary manner. As the follower block is retracted,it is obvious that'the chain 20 will be tightened on the pipe, and thatwhen the block is advanced, the reverse movement or said parts will becaused.

Having thus fully described my invention, what I claim as new and desireto secure by Letters Patent is:

In a pipe cutter, the combination with a body having an elongated cavityflared at one of its ends, of a pair of spaced rollers transverselyjournaled in the flared end of said body, a block slidably mounted insaid body, means connected to said block and extended therefrom throughthe end of said body opposite its rollers for reciprocating the block, aplurality of clamping links or toggles pivotally connected in pairs on acommon pivot at one of their ends to said block, said pairs of linksextending divergently between said rollers, the members of one pair ofsaid clamping links each having a substantially diagonally disposed slotin its outer portion, said slots registering with one another, a linkedelement pivotally connected at one of its ends to the outer portion ofthe other pair of clamping links and having means at its other end todetachably engage said slot, and a plurality of disk cutterstransversely journaled on the linked element in spaced relation to oneanother.

JAMES CONNING.

